package com.example.tests;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import java.util.Set;

import static org.junit.Assert.*;
import static org.hamcrest.Matchers.*;

import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class GroupCreationTests extends TestBase {

	Random rnd = new Random();
	
	@DataProvider(name = "randomGroups")
	public Iterator<Object[]> generateRandomGroups() {
		List<Object[]> list = new ArrayList<Object[]>();
		for (int i = 0; i < 5; i++) {
			GroupObject group = new GroupObject()
			.setName("name"+rnd.nextInt())
			.setHeader("header"+rnd.nextInt())
			.setFooter("footer"+rnd.nextInt());
			list.add(new Object[]{group});
		}
		return list.iterator();
	}

	@Test(dataProvider = "randomGroups")
	public void testValidGroupCanBeCreated(GroupObject validGroup)
			throws Exception {
		Set<GroupObject> oldList = app.getGroupHelper().getGroups();
		// action
		app.getGroupHelper().createGroup(validGroup);
		// validate
		Set<GroupObject> newList = app.getGroupHelper().getGroups();
		verifyGroupAdded(oldList, validGroup, newList);
	}

	private void verifyGroupAdded(Set<GroupObject> oldList,
			GroupObject someGroup, Set<GroupObject> newList) {
		assertThat(newList.size(), equalTo(oldList.size() + 1));
		someGroup.setId("###");
		oldList.add(someGroup);
		someGroup.setId(null);
		assertThat(newList, equalTo(oldList));
	}

	@Test
	public void testGroupWithEmptyDataCanBeCreated() throws Exception {
		GroupObject emptyDataGroup = new GroupObject().setName("")
				.setHeader("").setFooter("");
		Set<GroupObject> oldList = app.getGroupHelper().getGroups();
		app.getGroupHelper().createGroup(emptyDataGroup);
		// validate
		Set<GroupObject> newList = app.getGroupHelper().getGroups();
		verifyGroupAdded(oldList, emptyDataGroup, newList);
	}
}
